Blar i NTNU Open på forfatter "Bukhari, Syeda Halima Zahra"
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Design of parallel compensator and stabilizing controller to mitigate non-minimum phase behaviour of the Czochralski process
Bukhari, Syeda Halima Zahra; Hovd, Morten; Aftab, Muhammad Faisal; Winkler, Jan (Peer reviewed; Journal article, 2020)This paper addresses the design of a parallel compensator and a stabilizing controller for the simplified crystal growth dynamics of the Czochralski (CZ) process, i.e., the process for the production of monocrystalline ... -
Inverse response behaviour in the bright ring radius measurement of the Czochralski process I: Investigation
Bukhari, Syeda Halima Zahra; Hovd, Morten; Winkler, Jan (Peer reviewed; Journal article, 2021)This is the first part of a two-article series that deals with the investigation of the anomalous behaviour in the radius measurement signal of the Czochralski (Cz) process and its mitigation in a feedback control system. ... -
Inverse response behaviour in the bright ring radius measurement of the Czochralski process II: Mitigation by control
Bukhari, Syeda Halima Zahra; Hovd, Morten; Winkler, Jan (Peer reviewed; Journal article, 2021)This is the second part of a two-article series investigating the presence of an inverse response in the measurement of the ingot radius in the Czochralski process for monocrystalline silicon production, when the ingot ...